| 双频激光雷达多通道波形数据联合测深方法 |
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| 引用本文： | 李由之,邱振戈,何林帮,栾奎峰,曹彬才.双频激光雷达多通道波形数据联合测深方法[J].海洋测绘,2020,40(2):47-51. |
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| 作者姓名： | 李由之 邱振戈 何林帮 栾奎峰 曹彬才 |
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| 作者单位： | 上海海洋大学海洋科学学院,上海201306;上海海洋大学海洋科学学院,上海201306;中国科学院上海技术物理研究所中国科学院空间主动光电技术重点实验室,上海200083;中国科学院上海技术物理研究所中国科学院空间主动光电技术重点实验室,上海200083;西安测绘研究所,陕西西安710054 |
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| 基金项目： | 国家重点研发计划(2016YFB0501700；2016YFC1400900)；上海市重点科研计划技术研究(17DZ1204902) |
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| 摘 要： | 激光雷达在不同水深环境下,单通道的波形数据波形差异性较大,难以准确检测真实的水面和水底回波信号。利用双频激光雷达1 064 nm近红外通道(CH1)以及532 nm不同接收视场的浅水通道(CH2)和深水通道(CH3),对不同水深的波形数据进行拟合分解,实现了多通道联合探测水面和水底回波信号。与单通道波形分解方法相比,实验结果表明,本文方法在波形有效检测率平均提高了约15%,测深精度平均提高了约11%。
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| 关 键 词： | 激光雷达测深 回波波形 波形分解 反卷积 信号检测 |
Combined Bathymetric Method of Multi-channel Waveform Data for Dual-frequency LiDAR |
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| LI Youzhi,QIU Zhenge,HE Linbang,LUAN Kuifeng,CAO Bincai.Combined Bathymetric Method of Multi-channel Waveform Data for Dual-frequency LiDAR[J].Hydrographic Surveying and Charting,2020,40(2):47-51. |
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| Authors: | LI Youzhi QIU Zhenge HE Linbang LUAN Kuifeng CAO Bincai |
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| Abstract: | Waveforms of single channel vary with different water depth environments,so it is difficult to accurately detect the real echo signal of water surface and bottom.In this paper,the near infrared channel (CH1) at 1064 nm and the shallow water channel (CH2) and the deep water channel (CH3) at 532 nm with different receiving field of view are used to fit and decompose different waveforms,and the echoes from both surface and bottom are precisely detected by multi-channel.Compared with the single channel waveform decomposition method,the experimental results show that the effective detection rate and sounding accuracy of this method are improved by about 15% and 11% respectively. |
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